Although we all got a kick out of watching Justin Theroux breakdance on The Ellen DeGeneres Show yesterday, his girlfriend Jennifer Aniston admits that as wonderful as it was, she feels terrible for helping Ellen DeGeneres trick him!

The Wanderlust star appears on the show today and talks to Ellen about her deception — she's the one that sent Justin's "breakdance" sneakers over to the set, knowing he wouldn't boogie down without them!

“I feel quite guilty about this because… I said [to Justin], ‘You should probably be prepared because Ellen likes to surprise you with things.' He was like, ‘She won’t do that to me. I’m a first-time guest,’” Jen shares.

“I was like, ‘You’re right. She would never do that to you, honey.’ And there I go and I help you in your trickery,” she adds.

But, when Ellen shows a clip of her beau breaking it down, she can't help but smile and clap for her man — she's obviously smitten! "I mean, come on!" she says giggling, "I couldn't do that!"

Something else Jen can't seem to do is take her new puppy Sophie, who she just adopted with Justin, out for a walk. It's sure to start a paparazzi bonanza! So, Ellen decides to gift Jen with a disguise for the pit bull mix, so the couple can finally hide from the cameras!